Vehicle jack



Oct. 16, 1928.

1 687 R. G. MCKEE 563 VEHCLE JACK Filed Feb. 21, 1927 2 SheetS-Shet l v v v v v v v v v v Oct. 16, 1928. 1,687,503

R. G. McKr-:E

VEHICLE JACK Filed Feb. 21. 1927 2 sheets-sheet 2 Patented ct. 13, i928.

UNITED STATES 'VEHICLE JACK.

Application filed February 21, 1927. Serial No. 169,998.

This invention relates to automotive vehicle jacks whereby either the power of the vehicle, or an auxiliary power applied thereto, can be utilized to elevate a portion of the vehicle a sufficient height to remove either a wheel or a tire, and is an improvement in my co-pending application, Serial #153,98el-iiled December io, ieee.

The object of the invention is to provide an improved jack which is of very simple construction, but which presents an extremely strong and'eilcient structure with a minimum number of parts.

The principal object of the invention is to provide a lifting devicein` which a specially constructed base is provided thereby enabling the lifting-bar guide to pivot thereon for the purpose of vaulting the weight being lifted to the desired positionon the device.

A still further object of the inventionis to provide a base which has a mechanism for limiting the travel of the guide-bar at kboth extremities within predetermined limits.

Still a further object` of the invention is to provide locking means which will automatically lock the jaclrin position after the weight of the object being lifted is transferred thereto.

Still another object of the invention is to provide improved means for anchoring the flexible connecting member, disclosed in the above mentioned `co-opending application, to

kthe baseof the jack and to a .driving wheel yof the vehicle.

In the accompanying drawings:

Fig. 1 is a sideelevation of one form of the j ack.

Fig. Z'is an end elevation thereof. Q

Fig. 3 is a view ofthe flexible connecting member.

Fig. 4 is a plan view of the base showing in section the pivotal mounting of the locking member.

Fig. 5 is a vertical sectional view taken approximately on Vthe line 55 of Fig. 1.

Fig. 6 is an end elevation of the lifting-bar guide.

Fig. 7 is a side elevation thereof.

Fig. 8 is a side elevation of the lifting-ban Fig. 9 `is a plan viewy thereof.

Fig. 10 is a sectional view ofthe locking member taken on the line 10-10 in Fig. 11,.

Fig. 11 is an end elevation of Fig. 10.

Fig. 12 is a plan View of Fig.. 10. Y

Fig. 13 is a side elevation of the eye-bolt.

Fig. 111 is a plan view of the anchor plate illustrated in operative position Von a frag ment of a vehicle wheel, and Fig. 15 is an end elevation thereof shown partly in section.

Fig. 16 is a side elevation of Fig. lei.

-Figs. `17 to 2O inclusive, are somewhat diagrammatic and are drawn at a reduced scale; Fig. 17 representing a fragment of a vehicle illustrating a side elevation of one of the driving wheels as viewed from the un# dei'side of the vehicle, the axle and housing being shown broken away; a pneumatic tire is illustrated in a deflated state and resting upon a tapered block or ramp. Fig. 18 is a view similar to Fig. 17, but illustrates the j ack located in the approximate position required prior to elevating the vehicle thereon.

Fig. 19 illustrates a portion of the vehicle support-ed in mid-air by the jack and shows the position assumed by various parts of the Y jack which actuate in response to the weight surface adjacent the ground, which create an initial gripping action against the supporting surface, either the ground or flooring, as the vehicle is being elevated thereon. A pair .of verticallydisposed lugs 18-18 are formed on the base and provided with horizontally disposed journaled bearings 19-19" into vwhich a pivot pin 22 isloosely fitted. A rigid stop 24sisk formed on the base, the contact surv face 25-of which is formed* at a predeter mined angle, thereby limiting the amount of forward travel or angle of the guide meinber and lifting bar 12; this feature being clearlyillustrated by the dotted view ofthe guide in Fig. 1 of the drawings. 26 is a vertically disposedrigid web supporting at itsupper extremity a transversely mounted pad or abutment 27, which may be set at an inclined plane. l.

30 indicates a perforated boss which is inv the present instance, cast integral with the web 26. 34 is a dog which has at one extremity aV pairorl perforated ears 85 lorming a. yolre which is litted loosely over the boss 30 as clearly illustrated in Figs. 1 and 4 of the drawings. 33 indicates a pin which lis loosely litted to and inserted through the apertures in the'ears 35, and also in the apertui'e inthe boss 30 forming a pivotal mounting 'tor the dog. rl`he opposite extremity of the dog is provided with outwardly projecting tlanges 36, which have abutment suritaces 3T. lirovisions tor disengaging the dog are made in the present instance in the form or a. perforated ear S8, which enables me to anchor to the swinging end of the dog, a hand operated connecting member, and for the purpose or' illustration a substantially small ile-Xible cable 39 is employed, it being or' sullicient length to permit the operator to conveniently pull when the jack is in loaded position under a vehicle. 40-40 indicate bosses which Amay be lel with the contact surface of the abutmenty 27, when in the loaded position illustrated in Fig. 19 of the drawings. The numeral 50 indicates apertures provided in the guide 12. They are so spaced and proportioned'as to permit the insertion of a @gl-bolt- 52, illustrated more clearly in Fig. 2. of the drawings.

` Journal bearings 53-58 are provided in the guide member 12 in which serted. Y l

The lifting-bar 15 is provided at its upper the pin 22 isinextremity with an expanded head portion 54.

A semi-circular llange 55 is formed" so that one extremity or' the flange is substantially higher than the opposite extremity, whenthey lifting-bar is in an aproximate vertical position with respect to its longitudinal axis. The

lifting b'ar, in the present embodiment, a rectangular bar, is provided with a plurality of apertures 56 so spaced as to register with the apertures 50 in the guide bar 12, so as to perinit'thc insertion of the U-'bolt v52.

58 indicates a flexible connecting member or cable having secured to one extremity a snap hook 59 and to its other extremityy an expanded head portion 60.V The snapk hook 59 is adapted to hook into the eye-bolt 42. i f

Referring to Figs. 14 to 16 inclusive, 61 represents a portable anchor plate, 52 a portion of a wheel lelloe and 68, a cross `sectional view of one ot the spokes of the wheel. The

anchorv plate 61 is curved to conform substantially to the inner periphery of the wheel elloe and may terminate at one extremity in transversely disposed llanges 65, the inwardly disposed laces or which engage with the side or the i'elloe, (as clearly illustrated in Fig.

15 or the drawings). 66 represents a lange disposedfoppositely to the flanges (l5-65. vIt

,is formed to engage with the opposed side portion of [the wheel felloe rlaiiges (S5-65.

(S7-67 indicate projecting ears which are so spaced as to provide a slot 6,8 to receive the headed end portion ol cable 58. rlheears are provided with abutting surfaces against which the inner extremity of the head 60 of the cable engages. 697-69 are semi-circular apertures or hoolr portions which are litted to hoolr to, or operatively engage with, one of engaged by the spokes of a wheel as indicated in Fig; 14l

of the drawings.

To provide initial elevation required, when elevating a vehicle wheel having a dellatedy pneumatic tire, l provide a tapered block' or yramp. 70 so formed asl to permit the vehicle to berolled thereon with comparative ease. f

Referring to Figs. 17 to 20 inclusive-71 indicates a conventionalftype of axle housing, and 7 2 a. driving shaft operating within the housing. 73 indicates a vehicle wheel and 74k Y a pneumatic tire.

'When operating the device,after the initial elevation has been obtained byrolling the vehiclewheel upon a block as indicated in Fig. 17, the jack is then located approximately in the position illustrated iii Fig. 18. It will be observed in this figure that the anchor plate 61 is in operative position on the elloe G2, 0l. the wheel, and that the cable 58 has one eX- ti'einity hooked to the eye-bolt 42 in the base,

land the opposite extremity attached to the anchor plate 61'; further that the dog 34 is set in a position so that the force of gravity will cause it to automatically return to the position illustrated in Figs.- 1 and 19 of the drawings. The abutment surfaces 37 of the dog 84, engage with the upper faces of the pad 49.

As the vehicle is propelled from the position illustratedk in Fig.-18 to the loaded-position illustrated in Fig. 19, the increasingfpressure on Vthe base of the jack, occasioned by the weight of the vehicle being transferred thereto,serves to force the pointed-'studs on the bottom ofthe base yinto the supporting surface-thereby reducing the tendency of the base to slipy due to the initial pressurerbeing applied at the low bar angle illustrated in Fig. 18. i f f `Wlien power is appliedk togthe driving wheel, it is obvious that, due to the loss of traction, the driving wheelbeing elevated-can revolveA through a short space. It will revolve only, until the-slack in the cable is overcome, at whichftime the wheel is then capable kof transferring the weight of the vehicle which it supports, over on the jack as illustrated in Fig. 19 of the drawings.

l/Vhen itis desired to lower thevehicle from the jack, the cable 39 is pulled which causes the dog to fall to an inoperative position illustrated in Fig. 20. The wheel is revolved slightly in a direction which will relieve the tension from the cable, thereby permitting the anchor plate 61 and cable 58 to be detached from the wheel. Traction required for the vvehicle to be lowered from the elevated position when utilizing its own power is acquired by utilizing the ramp 70, it usually bein placed in the position illustrated by the dott-ed view in Fig. 20.

F or elevating wheels other than driving wheels, it is obvious that my jack can be operated just as successfully, only the operation of attaching' the cable and the anchor plate to the wheel may be eliminated, inasmuch as the driving wheels provide adequate traction for the jacking operation. l

As changes of construction could be made within the scope of my invention, it is intended that all matters contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limitingsen'se.

Having thus described my invention, what I claim is:

l, In a vehicle jack, comprising a lifting bar, a journaled guide member for the bar, a base, a flexible tension member adapted to attach to the base and to a wheel of the vehicle.y said base provided with a pair of vertically disposed ribs, the upper extremity of which terminate in transversely disposed surfaces for Contact with the guide member.

2. In a vehicle jack, comprising a lifting bar, a guide member adapted to telescopically engage with the lifting bar, a base upon whichV g member adapted to attach to a wheel of the vehicle and to the base, angularly disposed abutment pads formed on the base one of which is adapted to engage with an angularly disposed abutment pad formed on the guide member, and locking means for locking the engaging pads in position.

4l. In a vehicle jack, comprising a journaled lifting element, a base, an anchor plate adapted to operatively engage with the felloe and spolre of a wheel of the vehicle, and flexible 4tension member adapted to engage with the base and with the anchor plate. Y

l 5. In a vehicle jack, comprising a journaled lifting element, a base, an anchor plate adapted to operatively engage with the felloe and spoke of a wheel of the vehicle, a flexible ten-- sion member adapted to engage with the base and with the anchor plate, said anchor plate having a body portion, lug means adapted to engage with the wheel felloe, and lugs for attachment of said flexible tension member.

In witness whereof, I have hereunto set my hand at Indianapolis, Indiana, this 12th day of February, A. D. one thousand nine hundred and twenty seven.

ROBERT G. MGKEE. 

